Definitely look for a 2nd hand one, you'll have less issues.
Don't go toooo old as some had wifi issues back in the day (no / partial drivers)
There's a lot of refurbs by major brands (ie Dell) that are ex-corp lease models with some kind of warranty (which won't cover the battery) because of the Win10 purge.
I think the GPU is the main issue if you're wanting to play games... and as others have said, gimmicks like touchscreens and fingerprint readers can be hit & miss.
I've installed Mint on Lenovo, Dell and HP laptops with no major issues.